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Investment securities - Maturity Distribution of Debt Securities Classified as Available-for-Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Total	$ 259,138	$ 259,410
Peoples Bank
Within one year	15,858
After one but within five years	148,810
After five but within ten years	40,582
After ten years	15,158
Available for sale securities	220,408
Mortgage-backed securities	38,700
Total	$ 259,108

X

- Definition

Fair value of available-for-sale debt securities maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing after the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of investment in available-for-sale debt securities with a single maturity date.

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